package day03;

public class IfDemo {
    public static void main(String[] args) {
        double price = 600.0;
        if (price >= 500) {
            price *= 0.8;
        }
        System.out.println("消费金额为"+price);

        int score =500;
        if (score>=0&&score<=100){
            System.out.println("成绩合法");
        }else{
            System.out.println("成绩不合法");
        }
    }
}
